* fpc_trunc_real: explicitly cast float64.high and float32 to longint, fixes test suite regressions on softfloat targets. These targets have different definitions of float64/float32 (with unsigned fields), causing comparisons like "float64.high<0" to be optimized out.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26095 3ad0048d-3df7-0310-abae-a5850022a9f2